title: Evolutionary transients in the rice transcriptome.
abstract: In the canonical version of evolution by gene duplication, one copy is kept unaltered while the other is free to evolve. This process of evolutionary experimentation can persist for millions of years. Since it is so short lived in comparison to the lifetime of the core genes that make up the majority of most genomes, a substantial fraction of the genome and the transcriptome may-in principle-be attributable to what we will refer to as "evolutionary transients", referring here to both the process and the genes that have gone or are undergoing this process. Using the rice gene set as a test case, we argue that this phenomenon goes a long way towards explaining why there are so many more rice genes than Arabidopsis genes, and why most excess rice genes show low similarity to eudicots.
authors.affiliation: Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 100029, China. wangj@genomics.org.cn
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.forename: Jianguo
authors.initials: J
authors.lastname: Zhang
authors.forename: Ruiqiang
authors.initials: R
authors.lastname: Li
authors.forename: Hongkun
authors.initials: H
authors.lastname: Zheng
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
authors.forename: Heng
authors.initials: H
authors.lastname: Li
authors.forename: Peixiang
authors.initials: P
authors.lastname: Ni
authors.forename: Songgang
authors.initials: S
authors.lastname: Li
authors.forename: Shengting
authors.initials: S
authors.lastname: Li
authors.forename: Jingqiang
authors.initials: J
authors.lastname: Wang
authors.forename: Dongyuan
authors.initials: D
authors.lastname: Liu
authors.forename: Jason
authors.initials: J
authors.lastname: McDermott
authors.forename: Ram
authors.initials: R
authors.lastname: Samudrala
authors.forename: Siqi
authors.initials: S
authors.lastname: Liu
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.forename: Huanming
authors.initials: H
authors.lastname: Yang
authors.forename: Jun
authors.initials: J
authors.lastname: Yu
authors.forename: Gane Ka-Shu
authors.initials: GK
authors.lastname: Wong
mesh_terms: D017360:Arabidopsis / Q000235:genetics; D018076:DNA, Complementary / Q000235:genetics; D018744:DNA, Plant / Q000235:genetics; D019143:Evolution, Molecular; D020224:Expressed Sequence Tags; D020440:Gene Duplication; D020869:Gene Expression Profiling; D017343:Genes, Plant; D018745:Genome, Plant; D012275:Oryza / Q000235:genetics*; D017422:Sequence Analysis, DNA
chemical_list: D018076:DNA, Complementary; D018744:DNA, Plant